Authorities say a school-bus car collision killed the car's driver and injured at least five children in southwestern Ohio.

Chief Deputy Dave Duchak of the Miami County Sheriff's Office says the car's driver was ejected and died at the scene in Union Township on Thursday. Authorities say the children received minor injuries. The ages and the number of children on the bus weren't immediately known.

A message left Thursday at Milton-Union Exempted Village Schools in West Milton wasn't immediately returned.

Authorities say the crash occurred around 7 a.m.

Duchak says the bus was traveling eastbound on Ohio 55 when the car traveling westbound at a high rate of speed went left of center and hit the bus.

He says authorities were withholding the driver's name until relatives could be notified.